John Francis Sharkey IV, NP-C
NPI 1336532456ActiveIndividual· Nurse Practitioner, Adult Health· Greenville, SC
Nurse Practitioner, Adult Health (NP-C) with Carolina Nephrology PA, practicing in Greenville, South Carolina. Their prescriptions cost Medicare Part D more than their services did: $238,957 for 1,048 claims, against $48,488 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 14 companies reporting payments in 2025, $1,035 in all, mostly food and beverage. Lists Prisma Health Greenville Memorial Hospital as a hospital affiliation.
Overview
| NPI | 1336532456 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP-C |
| Sole proprietor | No |
| NPI issued | Mar 13, 2015 |
| Last updated in NPPES | Mar 13, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Adult Health Primary | 363LA2200X | 19347 | SC |
| Nurse Practitioner, Gerontology | 363LG0600X | 19347 | SC |
| Nurse Practitioner, Primary Care | 363LP2300X | 19347 | SC |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 372 |
|---|---|
| Services billed | 1,860 across 29 procedure codes |
| Paid by Medicare | $48,488 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,048 · 2,038 30-day fills |
|---|---|
| Patients | 251 |
| Total drug cost | $238,957 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Carolina Nephrology PAGreenville, SC · 37 clinicians
Hospital affiliation
- Prisma Health Greenville Memorial HospitalGreenville, SC
Other facilities
- Prisma Health North Greenville LtachLong-term care hospital · Travelers Rest, SC
Industry payments (Open Payments)
- 2025$1,035 · 45 payments from 14 companies
- 2024$1,406 · 66 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $347.96 | 14 |
| Amgen Inc. | $119.76 | 6 |
| Akebia Therapeutics Inc | $96.54 | 4 |
| Calliditas Therapeutics US Inc. | $93.76 | 3 |
| Mallinckrodt Hospital Products Inc. | $86.44 | 3 |
What the 2025 payments were for
- Food and Beverage$1,035 · 45 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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